HOLOGRAPHY, 1948-1971
... electron lenses to about 5/1000 radian, at which angle the spherical aberration error is about equal to the diffraction error. If one doubles this aperture so that the diffraction error is halved, the spherical aberration error is increased 8 times, and the image is hopelessly blurred. After ponderi ...
... electron lenses to about 5/1000 radian, at which angle the spherical aberration error is about equal to the diffraction error. If one doubles this aperture so that the diffraction error is halved, the spherical aberration error is increased 8 times, and the image is hopelessly blurred. After ponderi ...
When is star formation episodic? A delay differential equation
... massive stars, that for gas pushed into the halo to return and interact with the disk and that for spiral density wave evolution, respectively. ...
... massive stars, that for gas pushed into the halo to return and interact with the disk and that for spiral density wave evolution, respectively. ...
A high-field solid-state Cl NMR and quantum chemical
... A series of six L-amino acid hydrochloride salts has been studied by 35/37Cl solid-state NMR spectroscopy (at 11.75 and 21.1 T) and complementary quantum chemical calculations. Analyses of NMR spectra acquired under static and magic-angle-spinning conditions for the six hydrochloride salts, those of ...
... A series of six L-amino acid hydrochloride salts has been studied by 35/37Cl solid-state NMR spectroscopy (at 11.75 and 21.1 T) and complementary quantum chemical calculations. Analyses of NMR spectra acquired under static and magic-angle-spinning conditions for the six hydrochloride salts, those of ...
Role of dispersion in pulse emission from a sliding
... remains close to a transform-limited NLS equation soliton, whereas with normal GVD the pulse’s spectral width rapidly increases, although the nonlinear gain introduces some bandwidth reduction. Figure 5 shows the dependence on D of the pulse amplitude A. The amplitude is nearly constant in the norma ...
... remains close to a transform-limited NLS equation soliton, whereas with normal GVD the pulse’s spectral width rapidly increases, although the nonlinear gain introduces some bandwidth reduction. Figure 5 shows the dependence on D of the pulse amplitude A. The amplitude is nearly constant in the norma ...
pdf-file - Max-Planck-Institut für Astronomie
... radiation pressure. Thus, the star formation scenario for low- and high-mass stars could in principle be the same (e.g., Keto 2007), suggesting that high-mass star formation could be a scaled-up version of the low-mass star formation process. In this paper, we aim to construct a global model (with t ...
... radiation pressure. Thus, the star formation scenario for low- and high-mass stars could in principle be the same (e.g., Keto 2007), suggesting that high-mass star formation could be a scaled-up version of the low-mass star formation process. In this paper, we aim to construct a global model (with t ...
Turbulence-driven Polar Winds from T Tauri Stars Energized by
... • Sackmann & Boothroyd (2003) argued that a more massive (~1.07 M) young Sun could have been luminous enough to solve this problem, but it would have needed strong early mass loss . . . ...
... • Sackmann & Boothroyd (2003) argued that a more massive (~1.07 M) young Sun could have been luminous enough to solve this problem, but it would have needed strong early mass loss . . . ...
The Secular and Rotational Brightness Variations of Neptune
... This is the seventh paper in a series which models the brightness, color and albedo of all the planets except Earth on the Johnson-Cousins magnitude system. Mercury (Mallama et al. 2002) and Venus (Mallama et al. 2006) were observed with the Solar and Heliospheric Observatory satellite. The SOHO mag ...
... This is the seventh paper in a series which models the brightness, color and albedo of all the planets except Earth on the Johnson-Cousins magnitude system. Mercury (Mallama et al. 2002) and Venus (Mallama et al. 2006) were observed with the Solar and Heliospheric Observatory satellite. The SOHO mag ...
Photonic Crystals - Materials Computation Center
... CI Enabled Photonic Crystal Research and Technology: Photonic “materials by design” Multiphysics and multiscale analysis ...
... CI Enabled Photonic Crystal Research and Technology: Photonic “materials by design” Multiphysics and multiscale analysis ...
A large Hα survey at z = 2.23, 1.47, 0.84 and 0.40
... et al. 2008a; Sobral et al. 2009a, 2012, hereafter S09 and S12), is a campaign project using the Wide Field CAMera (WFCAM) on the United Kingdom Infrared Telescope (UKIRT), as well as the Suprime-Cam on the Subaru Telescope and the HAWK-I camera on Very Large Telescope (VLT). On UKIRT, HiZELS exploi ...
... et al. 2008a; Sobral et al. 2009a, 2012, hereafter S09 and S12), is a campaign project using the Wide Field CAMera (WFCAM) on the United Kingdom Infrared Telescope (UKIRT), as well as the Suprime-Cam on the Subaru Telescope and the HAWK-I camera on Very Large Telescope (VLT). On UKIRT, HiZELS exploi ...
Characterization of the citrate precursor, used for
... X-band ERS-220/Q spectrometer at RT. Electronic absorption spectra were taken at RT with a UV-VIS spectrometer Cary 100 within the range of 200 to 800 nm. The UV-VIS spectra of the sample “Precursor” were recorded after dissolving in distilled water in ratio: 1:1 and 1:2, and for ratio 1:1 after a w ...
... X-band ERS-220/Q spectrometer at RT. Electronic absorption spectra were taken at RT with a UV-VIS spectrometer Cary 100 within the range of 200 to 800 nm. The UV-VIS spectra of the sample “Precursor” were recorded after dissolving in distilled water in ratio: 1:1 and 1:2, and for ratio 1:1 after a w ...
Reference Guide to Fiber Optic Testing Glossary Reference Guide to Fib
... A very accurate color filter used to selectively pass light of a small range of wavelengths, whereas other ones are reflected. Used in wavelength division multiplexers (WDM). ...
... A very accurate color filter used to selectively pass light of a small range of wavelengths, whereas other ones are reflected. Used in wavelength division multiplexers (WDM). ...
Replication of Holograms with Corn Syrup by Rubbing
... these images had a dimension of 5 mm × 5 mm, and contained 1024 × 1024 pixels. By illuminating the hologram (corn syrup) with a divergent spherical wave, the images were reconstructed, as shown in Figure 3a,b. At a distance of 2 m, pictures are taken through a translucent screen. The diffracted imag ...
... these images had a dimension of 5 mm × 5 mm, and contained 1024 × 1024 pixels. By illuminating the hologram (corn syrup) with a divergent spherical wave, the images were reconstructed, as shown in Figure 3a,b. At a distance of 2 m, pictures are taken through a translucent screen. The diffracted imag ...
Behind the weak excitonic emission of ZnO quantum dots: ZnOÕZn
... Zn共OH) 2 共150 °C兲 sample, the weak UV band and the strong visible band at 2.16 eV 共curve e兲 should come from ZnO with much larger particle sizes. Only the UV emission at 3.21 eV is observed for the bulk OH-group free ZnO 共curve f兲. It thus seems that, for ZnO QDs, the appearance of strong UV emissio ...
... Zn共OH) 2 共150 °C兲 sample, the weak UV band and the strong visible band at 2.16 eV 共curve e兲 should come from ZnO with much larger particle sizes. Only the UV emission at 3.21 eV is observed for the bulk OH-group free ZnO 共curve f兲. It thus seems that, for ZnO QDs, the appearance of strong UV emissio ...
\ 204 207 208 209 210 21g \ 221 /
... pulse energy of a signal that is transmitted from one point to another through a medium. [0025] Gain Medium refers to a lasable material as described beloW With respect to a Laser. ...
... pulse energy of a signal that is transmitted from one point to another through a medium. [0025] Gain Medium refers to a lasable material as described beloW With respect to a Laser. ...
Soft X-Ray Polarimetry
... large collecting area. While we have specifically examined a case involving Critical Angle Transmission (CAT) gratings, our design is flexible enough to be used with other designs such as one based on reflection or off-plane gratings. Multilayer coatings have been used in several NASA missions, incl ...
... large collecting area. While we have specifically examined a case involving Critical Angle Transmission (CAT) gratings, our design is flexible enough to be used with other designs such as one based on reflection or off-plane gratings. Multilayer coatings have been used in several NASA missions, incl ...
Stellar death - Department of Astronomy
... Cores of low-mass stars collapse after losing their envelopes Generate luminosity (Kelvin-Helmholtz mechanism) R = 0.01R⊙ ≈ REarth ! ...
... Cores of low-mass stars collapse after losing their envelopes Generate luminosity (Kelvin-Helmholtz mechanism) R = 0.01R⊙ ≈ REarth ! ...
LASER LIGHT SCATTERING FOR INVESTIGATION OF PARTICLE
... there by securing the best price possible. However, there is no universal grading system. Each producing country has their own national standard which fulfills the minimum export quality requirement suggested by the market[2,3,5]. Most probably the flavor and quality of coffee depends on the coffee ...
... there by securing the best price possible. However, there is no universal grading system. Each producing country has their own national standard which fulfills the minimum export quality requirement suggested by the market[2,3,5]. Most probably the flavor and quality of coffee depends on the coffee ...
Helium Neon Laser - Educational Lasers
... the fine-adjustment screws of the etalon holder. When increasing the tilting angle the laser turns first off, before it emits again in the next higher longitudinal mode. This test can be done up to more than 10 mode orders. In addition, longitudinal modes and their frequency distance can be determin ...
... the fine-adjustment screws of the etalon holder. When increasing the tilting angle the laser turns first off, before it emits again in the next higher longitudinal mode. This test can be done up to more than 10 mode orders. In addition, longitudinal modes and their frequency distance can be determin ...
Variable Incidence Angle Fluorescence Interference Contrast
... In contrast, FLIC, developed for biological microscopy by Fromherz and co-workers (9–12), uses a very simple experimental setup to achieve very high reconstructed z-resolution. In FLIC (Fig. 1 B), the sample is assembled on a series of SiO2 steps of different thickness on a highly reflective and fla ...
... In contrast, FLIC, developed for biological microscopy by Fromherz and co-workers (9–12), uses a very simple experimental setup to achieve very high reconstructed z-resolution. In FLIC (Fig. 1 B), the sample is assembled on a series of SiO2 steps of different thickness on a highly reflective and fla ...
Clumpy wind accretion in supergiant neutron star high mass X
... density and velocity structures in the wind, where dense shells are formed relatively close to the star during a first stage of unstable growth of the LDI. The dense shells have rather small radial extent, low electron temperatures (T e ∼10 kK) and contain the bulk of the wind mass. The colloquial t ...
... density and velocity structures in the wind, where dense shells are formed relatively close to the star during a first stage of unstable growth of the LDI. The dense shells have rather small radial extent, low electron temperatures (T e ∼10 kK) and contain the bulk of the wind mass. The colloquial t ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.